Transcript for Former Aide Claims to Have Evidence Against Governor Christie

This is a special group. -- New York with a CBC news digital special report a bridge -- bomb shell -- one of New Jersey governor Chris Christie's closest longtime allies now says the New Jersey governor. Knew about the George Washington Bridge lane closings and that he has evidence to prove it Christie. A -- sixty Republican presidential favorite has repeatedly denied any involvement or knowledge. And fired the -- he deemed responsible. For now on the latest on this a lot of that -- political director -- -- -- in Washington DC -- latest on this and Rick. Who is the -- that made this allegation. David Wild scene is a former high school friend of Chris Christie who served on the Port Authority. Of new York New Jersey oversees the George Washington Bridge in the entries to it -- in in the letter from his lawyer to the Port Authority is actually a plea to get legal representation forum. He claims that mr. wild scene has evidence that suggests that Chris Christie. Knew about the lane closings in real time and that his administration was in fact behind them ordering them so the first part of that would directly contradict to keep a key claim that Chris Christie made. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- And evidence exists as well tying mr. Christie to having knowledge of the lane closures during the period when lanes were closed contrary to what the governor stated publicly -- -- two -- press conference he gave. Immediately before mr. Weill's team was scheduled to appear before the transportation committee. Mr. while -- -- test the accuracy of various statements that the governor made about an entity can -- the inaccuracy of some so again today first claimed that the Christie administration. Ordered this that would be a new development although wouldn't directly implicate Christie. To the claim that Christie is shown to have known about them as it was going on that part is more damaging potentially politically Chris Christie. In the idea that he knew about it and said that he didn't until afterward. Would be extremely damaging to his credibility as this moves -- now wild scene has said apparently that he has evidence to back the claim. As is indicated in that letter there when where might we see it. What's interesting here is that he -- -- the Fifth Amendment before the state legislative committee there are also criminal investigations going on as well you'd imagine some -- that would come forward in NC and potentially sealed testimony at first there. This is now emerging publicly as part of mr. while scenes -- to try to get legal representation. For himself from the Port Authority in addition -- that you'd imagine that if there's a criminal case here this would be used as part of potential plea bargain so. There's nothing that that I know of yet that would can -- this although there are about twenty exactly 22 subpoenas out there next week. -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- To the veracity of the claims he -- that day. Eighty undercutting that any questioning -- that any suggestion in writing that he knew things that he says he did not know about. Potentially fatal to him politically ABC's Rick -- on latest on this Rick we thank you for your time for your answer we appreciate that. And of course a complete recap right here on this latest development. On ABC news dot conference on -- that's where New York with this ABC news digital special report.

This transcript has been automatically generated and may not be 100% accurate.

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